After unsuccessfully trying to duplicate the problem, I noticed what you
entered for the CONFIG.SYS file. It looks like the 3COM installer was used at
some time before trying AppleShare PC. All 3COM software must be inactive for
AppleShare PC to operate. The 3COM software and the AppleShare PC drivers
conflict with each other.
Remove the following lines from the CONFIG.SYS file:
device=pro.sys
device=eth523.sys
device=buf.sys
device=idp.sys
device=spp.sys
device=lgl.sys
device=epath.sys
It is also a good idea to remove any lines from the AUTOEXEC.BAT file that
reference 3COM software. These lines will begin with runminds, msredir, or nb.